(NewsNation) — Bullets fired from a gun used in a fatal shooting at the Dallas Immigration and Customs Enforcement field office contained “anti-ICE” language, the FBI announced on Wednesday.
Investigators have identified Joshua Jahn, 29, of Collin County, Texas, as the shooter. FBI officials said the shooter died by suicide.
Department of Homeland Security officials said three detainees at the facility were shot, one fatally. DHS Assistant Secretary Tricia McLaughlin said the shooter fired “indiscriminately” at the facility from a nearby rooftop.
FBI Director Kash Patel included a photo of the bullet casings found at the scene, one of which had “anti-ICE” written on it in blue ink.
“These despicable, politically motivated attacks against law enforcement are not a one-off,” Patel wrote on X. “We are only miles from Prarieland Texas, where just two months ago an individual ambushed a separate ICE facility targeting their officers. It has to end and the FBI and our partners will lead the these investigative efforts to see to it that those who target our law enforcement are pursued and brought to the fullest extent of justice.”
Bullets found at the scene of the fatal shooting at the Dallas ICE field office included the words “Anti-ICE”. 
Police block off the street close to a U.S. Immigration and Customs Enforcement office after a reported shooting, in Dallas on Wednesday, Sept. 24, 2025. (AP Photo/Julio Cortez) 
Sen. Ted Cruz, R-Texas talks about the shooting at a U.S. Immigration and Customs Enforcement facility in Dallas during a news conference on Wednesday, Sept. 24, 2025. (AP Photo/Julio Cortez) 
Law enforcement gather at a staging area close to a U.S. Immigration and Customs Enforcement office after a reported shooting, in Dallas on Wednesday, Sept. 24, 2025. (AP Photo/Julio Cortez)
Joseph Rothrock, the special agent in charge of the FBI’s Dallas field office, said his agency is investigating the shooting as an act of targeted violence. No members of law enforcement were injured, he said.
Vice President JD Vance, speaking to Nexstar Washington Correspondent Reshad Hudson, called Wednesday’s shooting a “motivated left-wing, political attack.”
“That I think goes to show that we have way too much of this in our country, especially in the last couple of weeks,” Vance said. “I think I’d encourage everybody to really tone down the rhetoric when it comes particularly to our law enforcement and our ICE agents.”
Texas Sen. Ted Cruz, a Republican, said at the news conference that the shooting was the third in Texas directed at an ICE officer or Customs and Border Protection agent.
“Look, in America, we disagree. That’s fine, that’s the Democratic process. But your political opponents are not Nazis. We need to learn to work together without demonizing each other, without attacking each other,” Cruz said.
Sen. Cory Booker, D-N.J., called the shooting an “unacceptable act of violence” in a social media post.
“My heart is with the victims and their loved ones,” Booker wrote. “While we don’t know all of the details yet, what we can, and all should, agree on is that the vilification of any group of people endangers them. It makes them targets. And it must stop. We are at an inflection point in our history where we must put in the work to break down our divisions and see our shared humanity. We cannot choose the path of hatred and division.”
NewsNation’s Ali Bradley contributed reporting to this story